Sounds awesome. Unfortunately the dang GEMA regulations prevent your video from being played in Germany. Any chance you have a copy posted without music?
I watch the google erth for nice places with pictures. Most of roads I find there.Also use wikiloc. Wikiloc trails are compatible with Google erth. For navigation I use Ozi explorer.
Great video. That's one area I have never been to (yet).
I liked the off-road driving especially at 27:30.
Towards the end of the video you drove through some concrete barriers. Were those left over from WW 2?